Hid page links when there is just one page.

viewer/templates/gallery_view.html

@@ -17,9 +17,11 @@
             </h1>
         </div>
         <div class="centered-container">
+            {% if num_pages > 1 %}
             <div class="mb-2">
                 {% for page in pages %}<a href="./?page={{page}}">{{page}}</a>{% if not forloop.last %}<span> </span>{% endif %}{% endfor %}
             </div>
+            {% endif %}
             <table class="fc mauto">
                 <tr>
                     {% if page != 1 %}